This is what a 100 µAh micro-battery looks like

ITEN 100uAh battery

Electronic components have shrunk a lot over the year, but batteries are usually one of the larger items in a design. ITEN changes that with solid state lithium-ion micro-batteries in the shape of SMD components with up to 100 µAh capacity. This is clearly not going to power your next smartphone, but ITEM micro-batteries could be found in ultra-low-power sensors potentially replacing non-rechargeable coin cell batteries with much higher capacities (e,g. 100 mAh). ITEN says their solid-state micro-batteries are superior to coin cell batteries because those are polluting, difficult to assemble on PCB, costly to recycle and require periodic maintenance once a battery is depleted. In addition, some low-power embedded systems still require high current pulses for instance to drive RF transceivers or actuators leading hardware engineers to rely on oversized coin cell batteries as those can only deliver small currents. The carbon footprint of such batteries is claimed to […]

LOLIN C3 Pico is a tiny ESP32-C3 board with battery charging support

LOLIN C3 Pico is a tiny (25.4×25.4mm) ESP32-C3 RISC-V board with 2.4 GHz WiFi and Bluetooth Low Energy connectivity, a few I/Os, and LiPo battery support including charging circuitry. I tend to like Wemos/LOLIN boards, because of their small form factor, support for equally tiny shields, and low price. The LOLIN C3 Pico is no exception, and even adds a few features such as an RGB LED, an I2C connector, and support for battery power and charging. LOLIN C3 Pico specifications: SoC – Espressif Systems ESP32-C3FH4 single-core 32-bit RISC-V (RV32IMC) microcontroller up to 160 MHz with 400 KB SRAM, 4MB Flash Connectivity – 2.4 GHz WiFi 4 and Bluetooth 5.0 LE (in SoC) Expansion headers 2x 8-pin headers with up to 12x GPIO, ADC, I2C, SPI, UART (3.3V I/O voltage) LOLIN I2C port USB – 1x Type-C USB for 5V power and programming Misc – Reset button and user button, […]

Olimex ESP32-C3-DevKit-Lipo is a tiny RISC-V board with WiFi 4, Bluetooth 5.0, and a LiPo battery charger

Olimex has just launched the ESP32-C3-DevKit-Lipo board based on ESP32-C3 RISC-V wireless microcontroller offering WiFI 4 and Bluetooth 5.0 connectivity, some I/Os, as well as USB and JTAG. As its name implies, the board can be powered by a LiPo battery and charged through a USB Type-C port. It offers up to 15 GPIO for expansion and comes with an ICSP connector in case you need to reflash or debug the bootloader through a JTAG interface. ESP32-C3-DevKit-Lipo specifications: Wireless module – Espressif Systems ESP32-C3-MINI-1-N4 module with: ESP32-C3 (ESP32-C3FN4) 32-bit RISC-V single-core processor up to 160 MHz with 4 MB embedded flash, 384 KB ROM, 400 KB SRAM (16 KB for cache), 8 KB SRAM in RTC Connectivity – 2.4 GHz 802.11b/g/n Wi-Fi 4 1T1R up to 150 Mbps & Bluetooth LE 5.0 with PCB antenna USB – 1x USB Type-C port for programming and JTAG debugging Expansion – 2x 9-pin […]

T-Embed is a battery powered WiFi controller with display and rotary encoder

LilyGo has launched yet another product based on the ESP32 family of microcontrollers with the T-Embed WiFi IoT controller powered by an ESP32-S3 dual-core processor, equipped with a color display and a rotary encoder, and powered by a battery. The device is programmable and can be used to control Smart Home and IoT devices connected over WiFi or Bluetooth. It also integrates a microphone and speaker, a microSD card for data logging, as well as a Grove connector and an 8-pin GPIO header for expansion. T-Embed specifications: Wireless module – ESP32-S3-WROOM-1 module with an ESP32-S3 dual-core Xtensa LX7 processor with WiFi 4 and Bluetooth 5.0 connectivity, 4 to 16MB QSPI flash, up to 8MB PSRAM, PCB antenna; (Note it’s unclear which exact version is used) Storage – MicroSD card socket Display – 1.9-inch IPS color TFT LCD with 320 x 170 resolution (ST7789 driver), 350 Cd/m2 brightness Audio – 2x […]

Add 18650 batteries underneath Raspberry Pi with the Red Reactor board (Crowdfunding)

Pascal Herczog’s Red Reactor is a battery power supply project that adds two 18650 batteries to Raspberry Pi 4, Raspberry Pi 3, or Raspberry Pi Zero board using the pogo pins for connection. The pogo pin method means the Red Reactor is attached underneath the board, as such does not prevent the user to add a HAT expansion board on top of the single board computer. There’s also a headerless version for custom setup or compatibility with boards such as Arduino, Banana Pi, Orange Pi, etc… where some soldering is required. Red Reactor’s key features and specifications: Battery holder for up to 2x flat-top 18650 LiPo batteries Battery voltage and current monitoring over I2C (INA219) for software safe shutdown control, system reset, and your own functions Safety Battery protection Resettable fuse protects against discharge between 2 cells Over-Charge, Over-Discharge, and 6A Over-Current protection Host connection Pogo pins for Raspberry Pi […]

TTGO T4 ESP32 board features 2.4-inch color display, IP5306 battery charging IC

LilyGO has launched yet another ESP32 board with an integrated color display. The TTGO T4 offers a 2.2-inch or 2.4-inch color display, LiPo battery support, but in contrast to many other boards from the company, features a battery charging circuitry based on Injonic IP5306 “fully-integrated power bank system-on-chip with 2.1A charger, 2.4A discharger”. The WiFi and Bluetooth IoT board is also equipped with 4MB flash, a MicroSD card socket, 8MB PSRAM, a 20-pin GPIO header and a 5-pin I2C connector for expansion, and a few buttons for programming and user control. TTGO T4 v1.3 specifications: Wireless MCU – Espressif Systems ESP32 dual-core Tensilica LX6 microcontroller @ up to 240 MHz with 520 KB SRAM, wireless connectivity RAM – 8MB SPRAM (ISSI PN18S32) Storage – 4MB SPI NOR flash, MicroSD card slot Connectivity (ESP32) 2.4 GHz 802.11 b/g/n Wi-Fi 4 Bluetooth 4.2 BR/EDR and Bluetooth LE 3D antenna and u.FL connector […]

ESP32 board with 150Mbps 4G LTE modem also supports RS485, CAN Bus, and relay expansion

LILYGO has designed another ESP32 board with a 4G LTE modem with the LILYGO T-A7608E-H & T-A7608SA-H variants equipped with respectively SIMCom A7608SA-H for South America, New Zealand, and Australia, and SIMCom A7608E-H for the EMEA, South Korean, and Thai markets, both delivering up to 150 Mbps download and 50 Mbps upload speeds. The board also supports GPS, includes a 18650 battery holder, and features I/O expansion headers that support an add-on board with RS485 and CAN bus interfaces, in a way similar to the company’s earlier TTGO T-CAN485 board with ESP32, but no cellular connectivity. LILYGO T-A7068E-H/T-A7608SA-H board specifications: Wireless Connectivity WiFi & Bluetooth – ESP32-WROVER-E module based on ESP32 dual-core processor @ 240 MHz with 4MB flash, 8MB PSRAM, 2.4 GHz WiFi 4 and Bluetooth 4.2/5.x connectivity, PCB antenna Cellular connectivity Data transfer speeds 4G LTE – Up to 150 Mbps downlink, up to 50Mbps uplink 3G HSPA+  […]

Mixtile Edge 2 Kit mini PC/IoT gateway supports an external 20Ah battery pack

Mixtile Edge 2 Kit is a mini PC/IoT edge computer powered by a Rockchip RK3568 quad-core Cortex-A55 processor coupled with up to 4GB RAM and 32GB flash that features a 12V SATA + SMBUS port that allows the insertion of a 20Ah battery pack lasting up to 12 hours for locations where power may be intermittent. The 3.5-inch industrial mini PC also offers Gigabit Ethernet and WiFi 6  connectivity, three USB 3.0 ports, plus expansion with M.2 and mPCIe sockets, as well as a similar U.2 connector found in the company’s Mixtile Blade 3 SBC powered by Rockchip RK3588 processor, but routed to different interfaces. Mixtile Edge 2 Kit specifications: SoC – Rockchip RK3568 quad-core Arm Cortex-A55 processor @ up to 2.0 GHz with Mali-G52 EE GPU, 0.8 TOPS NPU, 4Kp60 H.265/H.264/VP9 video decoder, 1080p100 H.265/H.264 video encoder System Memory – 2GB or 4GB LPDDR4 Storage 16GB or 32GB eMMC […]