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Photon Vibe more speed

Jiuk

Member
Let me talk about charge pump IC. If you use LT1054 or 7660 type, maximum speed is so slow. I dunno why. It must be 1044 type IC. I prefer TC1044scpa.

If you want more speed change R14&R15 -> 3k9.
 

pedjok

Active member
Let me talk about charge pump IC. If you use LT1054 or 7660 type, maximum speed is so slow. I dunno why. It must be 1044 type IC. I prefer TC1044scpa.

If you want more speed change R14&R15 -> 3k9.
Thank you!
 

Chuck D. Bones

Well-known member
You didn't say how much faster you wanted to go. Changes in speed at the top end of the range can be achieved by reducing R14 & R15. If you go too far, the oscillator will stop when you max out the SPEED control. You can change the entire speed range by changing C7-C9.
 

verr76

New member
You didn't say how much faster you wanted to go. Changes in speed at the top end of the range can be achieved by reducing R14 & R15. If you go too far, the oscillator will stop when you max out the SPEED control. You can change the entire speed range by changing C7-C9.
hi ... sorry if this is obvious, but changing c7, c8 and c9 in what way to increase speed ? higher or lower than 1u ? ... I'm building this but I only have at hand 7660s, not 1044... so I don't know yet if I'll have the problem Jiuk mentions
 

Mcknib

Active member
Lower value would mean faster capacitor charge and discharge times giving you extra speed

You're best to socket them to see what you like
 
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