ArduinoRasPi.BlogSpot.com

A mostly simple list of basic information. LCD displays , the most common interface, it's typically easiest to get one specified for your device, at least identify the driver chip the display uses and be sure there is driver code available. Here's a guy's review of several ESP-32 boards that come with either LCD or OLED displays. Organic LEDs available to hobbyists are typically low cost and low resolution, but have a sharp energy efficient image. The last 0.96" mono-color OLED I just ordered from Aliexpress was $2.15, with 128X64 resolution and a relatively slow I2C interface, a bit of status information can be a big help. Novel model with 2 different pre-tinted Yellow and Blue  zones.  HUB-75 interface video wall LED modules I was checking out a new 1" 8x8 Neopixel display using 2mm LEDs that sells for $25. You can get a display panel with 2048 LEDs for about the same amount. (You can pay twice the price to get one from Adaf...

The Risk-V chip on the MaiX BiT board also contains hardware FFT which should make it a respectable audio analysis board.  Sipeed offers a microphone array board with 7 mics and 12 RGB LEDs. Unfortunately the mic array, which SeeedStudio  indicates is for Dock/Go/Bit, there is no real provisions made for the newer BiT board. Included with the mics is a 10 pin ribbon cable for the Go board, and an unadvertised (not on sales page inventory) 5x2 "dupont" connector cable which directly connects between the back of the mic array (not pictured on the sales page) and the Dock board area with mic connection labels silk screened on the board. Some improvising is needed to hook up the BiT.  I offer 2 different solutions. The first that Seeed could help by throwing in a couple of replacement connector housings. Connection Method #1 (You might have to start with a larger housing and cut it down to size) The Seed OPL type for ...