My 5-yr old son is really into cricket at the moment. We play in our back yard, he can send a tennis ball right to the end of the lawn, sometimes over the fence.
I found an old 40X lying away and 6 nice big LCD digits, so made a little scoreboard for outside seeing as the little guy is so enthusiastic (plus it keeps him away from TV)
The top row is for his score, the bottom for mine. Each button going left to right is 1,2,3,4 runs plus 6 for the white. The black button on the side takes 2 runs off, if we hit it in to the carport near dad's car. Knocking over dad's beer is -50 runs.
You flick the switch on the left to swap between top and bottom.
It runs off 5 x recharg AAA batteries - the LCDs draw 9/10th of not much current. I drive them a nice sq wave from one of the picaxe out pins - it does the mainloop pretty fast, so you don't get flickering. Each display is controlled by a 4543 BCD driver, so the 40X needs 6 outlines for the 6 digits, plus 4 for the BCD to the relevant IC.
Pretty simple!
His role was to pick the colour spray can.
Except he gloats when he gets more runs than me .........
I found an old 40X lying away and 6 nice big LCD digits, so made a little scoreboard for outside seeing as the little guy is so enthusiastic (plus it keeps him away from TV)
The top row is for his score, the bottom for mine. Each button going left to right is 1,2,3,4 runs plus 6 for the white. The black button on the side takes 2 runs off, if we hit it in to the carport near dad's car. Knocking over dad's beer is -50 runs.
You flick the switch on the left to swap between top and bottom.
It runs off 5 x recharg AAA batteries - the LCDs draw 9/10th of not much current. I drive them a nice sq wave from one of the picaxe out pins - it does the mainloop pretty fast, so you don't get flickering. Each display is controlled by a 4543 BCD driver, so the 40X needs 6 outlines for the 6 digits, plus 4 for the BCD to the relevant IC.
Pretty simple!
His role was to pick the colour spray can.
Except he gloats when he gets more runs than me .........
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