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May 19, 2025May 21, 2025 by Debashis Das - 2 Comments

FlippenHeimer Geiger Counter module adds radiation sensing to Flipper Zero

The FlippenHeimer is a compact Geiger counter add-on module designed to work with the Flipper Zero. It allows users to monitor beta and gamma radiation levels using the Flipper’s display and power source, making it a portable device to detect radiation. Built around a J305 Geiger–Müller tube, the FlippenHeimer provides real-time data logging, visual feedback via graphs. Other than that, it features “atomic dice roller” functionality that uses the random nature of radioactive decay to generate unpredictable outcomes. Key components of this device include 555 timers, LM358 op-amps, 2N3904 and MPSA42 transistors, inductors, and high-voltage capacitors. These features make this device useful for applications such as environmental awareness, hobbyist radiation monitoring, and generating random values. FlippenHeimer Specifications: Main interface – Connects to Flipper Zero via GPIO/UART (plug-and-play with GPIO header) Detection device – J305 Geiger-Müller glass tube, suitable for gamma and beta radiation Radiation detection: Detects beta and gamma radiation […]

April 14, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Pimoroni Presto – A Raspberry Pi RP2350-powered 4-inch wireless desktop touch display

Pimoroni Presto is a 4-inch desktop color touch display powered by a Raspberry Pi RP2350 microcontroller, and equipped with a Raspberry Pi RM2 wireless module for WiFi 4 and Bluetooth connectivity. The display comes with 16MB of SQPI flash and 8MB of PSRAM, seven RGB LEDs for ambient lighting, a microSD card slot, a piezo speaker, a Qwiic/STEMMA QT connector for expansion, a USB-C port for power and programming, and a 2-pin JST connector for an optional battery. Pimoroni Presto specifications: Microcontroller – Raspberry Pi RP2350B MCU CPU Dual-core Arm Cortex-M33 @150MHz with Arm Trustzone Dual-core 32-bit Hazard3 RISC-V @ 150MHz Up to two cores can be used at the same time Memory – 520KB SRAM Package – QFN-80; 10×10 mm Memory – 8MB PSRAM Storage 16MB QSPI flash MicroSD card slot Display – 4-inch square IPS LCD screen with 480 x 480 resolution, capacitive touchscreen Wireless – Raspberry Pi […]

April 13, 2025April 14, 2025 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

Battery-powered Seeed Studio IoT Button features ESP32-C6 SoC, supports ESPHome or Zigbee firmware

Seeed Studio IoT Button is an inexpensive ESP32-C6 button powered by a rechargeable 18650 battery and designed to easily and quickly control Smart Home devices over WiFi 6 or Zigbee wireless protocol. It will be especially handy to Home Assistant users since the device is pre-flashed with ESPHome firmware for easy integration (over WiFi), and the company also provides a Zigbee firmware for Zigbee Home Assistant (ZHA) integration. The hardware is pretty basic with a button, three LEDs, and a USB-C port for charging the replaceable 18650 battery. Seeed Studio IoT Button specifications: SoC – ESP32-C6FH4 CPU Single-core 32-bit RISC-V clocked up to 160 MHz Low-power RISC-V core @ up to 20 MHz Memory – 512KB SRAM, 16KB low-power SRAM Storage – 320KB ROM, 4MB flash Wireless – 2.4 GHz WiFi 6, Bluetooth 5.0 LE/Mesh (somehow not used here), 802.15.4 radio for Zigbee 3.0 and Thread. Matter compatible. USB – […]

March 19, 2025March 20, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

The Pebble Smartwatch is back with the Core 2 Duo and Core Time 2 models running PebbleOS open-source firmware

The Pebble Smartwatch was first introduced in 2012 with a black and white e-Paper display, a week of battery life, and an amazingly successful Kickstarter company that raised over 10 million dollars. It was followed by the Pebble Time with a color display in 2015, and the Pebble 2 & Time 2 watches followed in 2016. But then it all went south from there, and Pebble’s assets were purchased by Fitbit in December 2016, all projects were canceled that year, and cloud services were discontinued in June 2018. Since then, the community has taken over working on the Rebble project to keep existing watches running, and Google acquired Fitbit in 2021. However, the project is slowly coming back to life. First, Google released the source code for the Pebble smartwatches and Pebble’s founder, Eric Migicovsky, and a team of engineers worked on reviving the project which now culminates with the […]

February 10, 2025February 11, 2025 by Jean-Luc Aufranc (CNXSoft) - 8 Comments

FlashMyPico – Raspberry Pi Pico / Pico 2 code editing and firmware flashing from a web browser

FlashMyPico website allows you to write C code, build the firmware, and flash it to your Raspberry Pi Pico, Pico W, Pico 2, or Pico 2 W directly from a web browser instead of having to check out the code from GitHub, build it in a terminal, and then manually copy the resulting binary. I’ve given it a quick with a Raspberry Pi Pico 2 board. The first step is to head over to flashmypico.com from your computer or even an Android smartphone. You’ll need a web browser that supports WebUSB, so for example, Firefox is not an option, and I eventually had to use Google Chrome instead. There’s a detect device link on the bottom left, so I clicked on that first, and my Raspberry Pi Pico 2 was detected as “RP2350 Boot” after I put it in bootloader mode. But it just told me that my board is […]

January 16, 2025January 16, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

FlipMods Combo is a 3-in-1 Flipper Zero expansion module with ESP32, GPS, and CC1101 modules

ESP32 GPS CC1101 3-in-1 expansion Flipper Zero

Sacred Labs’ FlipMods Combo is a 3-in-1 expansion module for the Flipper Zero that combines an ESP32 WiFi and Bluetooth SoC, Texas Instruments CC1101 Sub-GHz wireless microcontroller, and an unnamed GPS module. The expansion module is housed in a neat 3D-printed case and features a built-in GPS antenna, external WiFI/Bluetooth & Sub-Ghz antennas, as well as a switch to send the GPS data to the ESP32 chip or the Flipper Zero. The ESP32 module is preloaded with the Marauder firmware also used in the ESP32 Marauder Pocket Unit and Mayhem v2 for Flipper Zero for penetration testing with Wi-Fi scanning, de-authentication attacks, packet sniffing, and more. FlipMods Combo specifications: Wireless modules ESP32-WROOM-32UE for WiFi and Bluetooth; external SMA antenna (long) Texas Instruments CC1011 for 315, 433, 868, and 915MHz ISM bands; external SMA antenna (short) GPS module with internal antenna Storage – MicroSD card slot up to 32GB USB – […]

January 10, 2025January 10, 2025 by Jean-Luc Aufranc (CNXSoft) - 2 Comments

Tanmatsu handheld terminal features ESP32-P4 RISC-V MCU, QWERTY keyboard, WiFi, Bluetooth, 802.15.4, and LoRa connectivity

Tanmatsu is a handheld terminal device for hackers, makers, and tech enthusiasts based on the 400 MHz ESP32-P4 RISC-V microcontroller, including a QWERTY keyboard, and supporting various connectivity options with WiFi, Bluetooth LE, 802.15.4, and even LoRa in the 433 MHz or 868/915MHz bands. The handheld computer also features a 3.97-inch MIPI DSI display, a built-in speaker and a 3.5mm audio jack, and various expansion connectors such as a Qwiic connector for I2C/I3C modules, and PMOD and SAO expansion connectors. Tanmatsu specifications: Microcontrollers Espressif ESP32-P4 dual-core RISC-V microcontroller @ 400MHz with 32MB of built-in PSRAM WCH CH32V203C8T6 32-bit RISC-V microprocessor @ up to 144 MHz with 20KB SRAM, 64KB flash used for keyboard matrix and power management Storage 16MB flash for firmware MicroSD card slot supporting SD cards at 3.3v and 1.8v voltage levels (SDIO 3) Display – 3.97-inch MIPI DSI display with 800 x 480 resolution, 65,536 colors Audio […]

January 3, 2025January 3, 2025 by Jean-Luc Aufranc (CNXSoft) - No Comments

ESP Offline Programmer flashes firmware to ESP32 and ESP8266 modules without PC

The ESP Offline Programmer is an ESP32 board with a microSD card slot designed to flash the firmware to other ESP32 or ESP8266 modules without a PC. You’ll still need one to copy the firmware to a microSD card, but once it’s done you can just insert the microSD card into the board and after wiring is done ideally using a jig, start the flashing sequence with the press of a button. In some ways, it’s the hardware equivalent of the esptool utility and can be useful for remote deployment where carrying a laptop may not always be convenient and potentially for flashing hundreds or thousands of modules using multiple ESP Offline Programmers in a way that’s faster than using computers. ESP Offline Programmer specifications: Wireless module – Espressif Systems ESP32-WROOM-32E ESP32 dual-core Tensilica LX6 microcontroller Storage – 4MB flash Wireless 2.4 GHz WiFi and Bluetooth LE connectivity, built-in PCB […]