Here's how to turn your messy Arduino projects for only $2.
With this card, you can make your Arduino project that can include wireless card like the popular NRF24L01 or WIFI (ESP8266) or Bluetooth HC06. In addition, your project can have a 2x16 LCD, a 4x4 keypad, two servos, a temperature sensor (1-wire) and an internal 3.7v li-po battery. All in one with this customizable PCB. If you consider the time you save for assembling without even thinking to save time of debugging. All that for less than $2 USD!
Why using Pro Mini board? Simply because it is the cheapest (about 2$) and the smallest design with Atmega328P. No need USB interface, just use one FTDI to upload your sketch for all of your projects.
This PCB is designed for this version of Pro Mini board (3.3v or 5v)
With this PCB you can use:
- Wireless cards NRF24L01 or WiFi ESP8266 or Bluetooth HC06 (one at a time)
- Supply voltage from 3.3 volts to 12 volts via 1.35mm power jack.
- Power source: Internal or external LiPo battery or power supply.
- Popular 2x16 LCD display (HD44780) with backlight and brightness trim .
- 1x4 or 4x4 keypad matrix.
- 2 servos direct pinout connectors.
- Temperature sensor (DS18S20) or other 1-wire device.
- Pull-up resistors for A6 and A7 (if 4x4 keypad used).
- Configurable voltage jumper (RAW or direct power).
- 1.35mm power jack for supply or charging internal battery.
- 4 analog pins if 1x4 keypad used.
- 8 analog pins if no keypad used.
- 3 digital pins if servos and 1-wire device is not used.
- Additional digital pin if NRF24L01 is not used.
- 6 digital pins if no LCD is used.
Sketches examples for using device on the board:
- LCD + Temp sensor (DS18S20)
- 4x4 keypad
- 4x1 keypad
- NRF24L01 as receiver
- ESP8266 WiFi card
- HC06 Bluetooth
I offer rewards with passive components to avoid you having to find the right parts that fit perfectly on PCB.
With each order, I include the two surface mount resistances (R1 and R2) because not all electronics enthusiast that have it stock.
I offer 3 types of rewards:
- A - PCB only (available in quantity of 1/4/8/16 pcs)
- B - PCB with passive components (available in 1/4/8/16 pcs)
- C - PCB with passive components including LiPo battery (available in 1/4/8/16 pcs)
* Based on exchange rate of 1,335% from xe.com on novembre 21th 2015.
***Lipo battery charge warning***
As you may have seen in the schematic, there is no electronic management of the battery charge (current, voltage or time limitation). Therefore the user must be very careful when charging the battery. Always charge the battery from a standard USB port and for a maximum of 45 minutes. Charging LiPo batteries can be dangerous if not done carefully. You should always have an eye on the battery when charging. You should know what you do, so be careful.
Risks and challenges
The biggest challenge for this project was to put most of popular components in a small package to meet the maximum needs of Arduino enthusiasts.Learn about accountability on Kickstarter
- (60 days)