Business Card PLUS (#003)

In this post a detail views of my this first version of my PCB business card. One side is more the business card side with contact information.

Also two rulers are in included. One on the bottom with cm divided in mm.
The division on the right can be used for counting PCB pins.
Text on the PCB is aligned with the holes in the PCB. (E.g. the o in Jeronimus. However in linkedin i needed to put the hole over the e.

The other side of the PCB is for the electronic circuits that can be build. It is more a development type board than one circuit and can also be used as a breakout board. So not all items need to be placed on the board. For several components the SMD or thru hole version can be used by placing the SMD pads between the holes for the thru hole version. The PCB can be used as an Arduino Uno shield / Arduino breakout board. In the white rectangulars long dupont pin holders can be placed. The two Arduino pin holders are not at "Dupont" distances. The good thing about this is that this prevents some mistakes when connection a shield. The disadvantage is that it is not easy to connect cheap prototype pcbs like the {} 5cm*7cm pcb.

By adding female pin holders vertical on the two columns where the small white line at the top this PCB can connect an Arduino pins to the 5cm*7cm PCB. Also on the top two blocks for 2*4 connectors are marked ESP01.

The right one is for "normal use" and the left one can be used to program an ESP01. The ESP01 can be used without an Arduino. An connector for an CR2035 can be used as power source, LA0 and LA2 are locations for 2 leds (SMD or thrue hole) with corresponing resistors ( PL0 and PL2),

On the bottom are three metal pads. 5V , 3V3 and GND for crocodile clips. Above the GND pad is a an SMD IC 8 SOP can be soldered. ( e.g. 555 or memory chip.)the pins of this SOP8 are only connected to the nearby holes. On the right side are holes for two push buttons.C1 and C2 are locations the corresponding capacitors. Between the two buttons is a location for a jumper (or wore bridge) to program ESP01 1  (top right). In up coming blog posts more details will follow.